/*
* Copyright (C) 2003-2011 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.etk.common.utils;
/**
* Created by The eXo Platform SAS
* Author : eXoPlatform
* exo@exoplatform.com
* Jul 21, 2011
*/
public class ListAccessValidator {
/**
* Validates index of list access.
*
* @param offset Start index.
* @param limit End index.
* @param size The size of list.
* @throws IllegalArgumentException
*/
public static void validateIndex(int offset, int limit, int size) throws IllegalArgumentException{
if (offset < 0) {
throw new IllegalArgumentException("Illegal index: offset must be a positive number.");
}
if (limit < 0) {
throw new IllegalArgumentException("Illegal index: limit must be a positive number.");
}
if (offset > size) {
throw new IllegalArgumentException("Illegal index: offset must be smaller than size of list.");
}
}
}